I have rarely found it to be the piston and seals (archive)

dragging, it has almost always turned out to be corrosion, dirt or lack of lubrication on the guide pins and bushing which allow the caliper to center itself and apply pressure equally. Usually if you take the caliper off and clean and lube the pins so that it slides back and forth freely that takes care of the problem. Sometimes it is also the hoses as Dave has mentioned. The only cars I have seen the piston actually sticking in the bores is on fords and older chryslers where the plastic pistons would cock in the bore. Just a thought.
Hi all... been kinda quiet here in the new city, been using the bus most days (I know, blasphemy, but no parking yet) and then I go for a 50min tootle around the unfamiliar town (no more than 50-60kph) and the damn rear left caliper is dragging again, enough to get the wheel nice-&-stinky hot.
I solved this last time by new fluid & a good flush out of the caliper; wasn't the handbrake shoes, and the other side at the rear with the same pads & rotor age is A-OK... so how hard is it to dismantle/rebuild the caliper, maybe including a light hone (VERY LIGHT!!) too??
Anyone done this?
Max (suffering E32 withdrawl)

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